import java.util.Scanner;

public class Work7 {
    public static void main(String[] args) {
        System.out.println("输入10个数：");
        Scanner a = new Scanner(System.in);
        int i;
        double sum=0;
        for(i=0;i<10;i++) {
            double b = a.nextDouble();
            sum= sum+b;
        }
        System.out.println(sum);
    }
}
